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iConverter GM3
Network Interface Devices
*SFPs Not included

- IEEE 802.1ag End-to-End Connectivity Fault Management (CFM)
- ITU-T Y.1731 End-to-End Ethernet Service OAM including CFM and Performance Monitoring
- IEEE 802.3ah Link OAM for per port link monitoring
- Geo-diverse uplink redundancy (1:1) option
- Remote management through TELNET, SNMPv1/v2c/v3 and IP-less 802.3ah OAM extensions
- SNMP management via Omnitron’s NetOutlook® Network Management software
- 802.1ad VLAN stacking (Q-in-Q) for E-Line and E-LAN service multiplexing
- Granular Rate Limiting using Committed Information Rate (CIR) and Committed Burst Size (CBS) per UNI, EVC and CoS
- Class of Service mapping based on 802.1p, ToS/DSCP and L2CP for QoS prioritization
- Small Form Pluggable (SFP) transceivers for standard or CWDM applications
- Supports 1000BASE-X and 100BASE-FX SFPs for interoperability with Gigabit and Fast Ethernet fiber equipment
- Fixed-fiber connectors available for multimode and single-mode dual fiber and single-mode single-fiber
- Customer-facing service port available in copper RJ-45 or SFP fiber interfaces
- 10,240 byte Jumbo frames
- Commercial, wide and extended temperature ranges
The iConverter GM3 is a flexible and cost-effective Network Interface Device (NID) with carrier-grade Service and Link Operations, Administration and Maintenance (OAM) capabilities. It provides demarcation functions for in-franchise and out-of-franchise Ethernet service applications.
The GM3 supports MEF-certified User-to-Network Interface (UNI) functions such as CoS prioritization, granular rate-limiting, and 802.1ad Provider Bridge VLAN stacking (Q-in-Q) for service multiplexing of multiple E-LINE and E-LAN services. The GM3 provides Service Mapping and Traffic Policing and Shaping.
The GM3 conforms to the latest carrier-class Ethernet OAM standards. IEEE 802.3ah Link OAM proactively monitors the network provider’s fiber access link and subscriber link (customer-facing) for physical failures and data errors. IEEE 802.1ag provides end-to-end Connectivity Fault Management (CFM). ITU-T Y.1731 adds Performance Monitoring capability to monitor key Service Level Agreement (SLA) parameters including frame delay, frame delay variation, frame loss and availability. These OAM features provide the efficient detection and rapid isolation of potential service problems enabling SLA assurance while reducing Operational costs (OPEX).
The GM3 fiber ports can support Gigabit (1000BASE-X) or Fast Ethernet (100BASE-FX) fiber access links by utilizing an SFP transceiver with the desired data rate. Fixed fiber connectors (ST or SC) are also available, supporting 1000BASE-X. The triple-speed copper interface operates at 1000, 100 or 10Mbps rate. The GM3 is available in 2-port or 3-port options. In the 3-port configuration, the GM3 can be used in geo-diverse redundant applications or in a multi-tenant application with two subscriber ports.
The GM3 is available as a compact standalone unit or as a chassis plug-in module. The hot-swappable GM3 plug-in module can be mounted in a high-density 19 or 5-Module chassis with any combination of redundant AC and DC power supplies. It can also be mounted in a 2-Module AC or DC powered chassis, or in a 1-Module chassis with AC or DC power input.
The plug-in module can function as a management module and manage other modules in the same chassis and as well as operate as a Network Interface Device. It features two 10/100/1000 Mbps Ethernet backplane ports for connectivity to adjacent modules in a chassis for multi-port and multi-service configurations.
The standalone GM3 is available as a DC powered tabletop or wall-mounted unit. It can be ordered with an external AC/DC power adapter, or it can be directly powered using a 2-pin terminal connector.
Carrier-Grade OAM

This out-of-franchise (off-net) application illustrates an E-Line service (Ethernet Virtual Connection) between two customer locations that geographically spans two or more Independent Operator networks. The Service Provider responsible for billing and service contract has installed iConverter GM3 NIDs at each subscriber location, which function as the end points of the Service Provider Maintenance Domain. Through 802.1ag and Y.1731 Service OAM, the GM3 NIDs constantly monitor the end-to-end service performance of the network, and the Service Provider has visibility across the Operators’ networks for assurance that the contracted Service Level Agreement commitments are being met.
NID Functions
- Ethernet Service OAM and Link OAM
- Comprehensive Fault Detection and Notification
- Media conversion for connectivity to subscriber equipment
- Supports 10,240 byte Jumbo frames
- MEF 9, 14 and 21 Certified Compliant
- Service Mapping to enable multiple services per UNI
- 802.1ad Provider Bridge VLAN stacking (Q-in-Q)
- User configurable VLAN EtherType
- Service Multiplexing up to 256 EVCs for E-Line or E-LAN services
- Layer 2 Control Protocol policy management
- Traffic Policing and Shaping
- Granular Rate Limiting
- Committed Information Rate (CIR)
- Committed Burst Size (CBS)
- Class of Service (CoS) mapping per
- 802.1p Priority Bit
- Type of Service / Differentiated Services Code Point (ToS/DSCP) IPv4/IPv6 Priority Marker
- Layer 2 Control Protocol (L2CP)
- Granular Rate Limiting
Ethernet Service OAM and Link OAM
- 802.3ah Link OAM
- Link Loopback
- Unidirectional Link Fault Detection
- Threshold based monitoring and notification
- Dying Gasp
- 802.1ag Connectivity Fault Management (CFM)
- Supports 8 levels of Maintenance Domains and Maintenance End Points (MEP)
- Up to 256 Maintenance Associations
- Continuity Check Messages (CCM)
- Remote Defect Indication (RDI)
- Link Trace
- Diagnostic Loopback (Layer 2 PING)
- Y.1731 End-to-End Ethernet Service OAM and Performance Monitoring
- Ethernet Connectivity Check (Eth-CC) Functionality
- Frame Delay
- Frame Delay Variation (Jitter)
- Frame Loss
- Service Availability
Fault Detection
- Supports a variety of Link Fault Detection and Fault
Propagation Features
- Link Fault Notifications
- Remote Fault Detection
- Asymmetrical Link Propagation
- Local Management
- Access via Serial Console Port
- Remote Management
- SNMPv1/v2c/v3
- SNMP management via Omnitron’s NetOutlook® Managment Software
- TELNET
- IP-less 802.3ah OAM extensions
- Access also available via modem and terminal server
- Public (non-proprietary) 802.1ag CFM SNMP MIBs
- Easy 3rd party SNMP Management software integration
- SNTP support
- PING (ICMP/ARP)
Interfaces & Redundacy
- Available with dual SFP fiber ports for geo-diverse uplink redundancy (1:1)
- Supports Rapid Spanning Tree Protocol (RSTP)
- Subscriber network service port available in copper RJ-45 or SFP Fiber interfaces
- Three-port configuration supports redundant access link or multi-customer applications
- Supports Gigabit (1000BASE-X) and Fast Ethernet (100BASE-FX) fiber access networks
- Small Form Pluggable (SFP) transceivers for standard or CWDM wavelengths
- SFP transceivers models support maximum fiber distances up to 140km
| Description | 10/100/1000BASE-T to 1000BASE-X Network Interface Device |
| Protocols | 10BASE-T, 100BASE-TX, 1000BASE-T, 100BASE-FX, 1000BASE-X |
| Frame Size | up to 10,240 bytes |
| UTP Cable | EIA/TIA 568 A/B, Category 5 and higher |
| Fiber Cable | Multimode: 50/125um, 62.5/125um, 100/140um |
| Single-mode: 9/125um | |
| Serial Cable | RS-232, 22 to 24 AWG, 12 to 50 pF/ft. |
| UTP Connector | RJ-45 |
| Fiber Connectors | |
| - SFP: | LC, RJ45 (1000, 10/100/1000Mbps) |
| - Dual Fiber: | SC, ST |
| - Single-Fiber: | SC |
| Serial Connector | Mini DIN-6 female; Mini DIN-6 male to DB-9 female adapter included |
| Temperature | |
| - Standard Operating | 0 to 50o C |
| - Wide Operating | -40 to 60o C |
| - Extended Operating | -40 to 75o C |
| Storage | -40 to 80o C |
| Compliances | UL, cUL, CE, FCC Class A, NEBS 3 Compliant MEF 9, MEF 14, MEF 21 |
| DC Power Input Connector | Plug-in: Power supplied by backplane Standalone: 2.5mm Barrel Connector or 2-Pin Terminal Connector |
| DC Power | Plug-in: 2 Port 1.6A @ 3.3VDC (Typical) Plug-in: 3 Port 2.0A @ 3.3VDC (Typical) Standalone: 8 - 32VDC 0.60A @ 9VDC (typical) 0.45A @ 12VDC (typical) |
| AC Power Adapter (US) via 2.5mm Barrel Connector |
Plug-in: N/A Standalone: 100 - 120VAC/60Hz 0.1A @ 120VAC (typical) |
| AC Power Adapter (Universal) via 2.5mm Barrel Connector |
Plug-in: N/A Standalone: 100 - 240VAC/50 - 60Hz 0.1A @ 120VAC (typical) |
| Dimensions | Plug-in: W: 0.85” x D: 4.5” X H: 2.8” Tabletop: W: 3.1” x D: 4.8” x H: 1.0” Wall-Mount: W: 3.8” x D: 4.8” x H: 1.0” |
| Weight without power adapter | Plug-in: 8oz. Standalone: 1.0 lb. |
| Weight with power adapter | Plug-in: N/A Standalone: 1.5 lb. |
| IP-Based Management | Telnet, SNMPv1, SNMPv2c, SNMPv3 |
| Other Protocols | TCP/IP, ICMP, ARP, RSTP, SNTP, DAYTIME |
| Humidity | 5% to 95% (non-condensing) |
| Altitude | -100m to 4,000m |
| MTBF (hrs) Without Power Adapter With US Power Adapter With Universal Power Adapter |
Plug-in: 340,000 hrs Standalone: 420,000 hrs Standalone: 250,000 hrs Standalone: 100,000 hrs |
| Port Configuration | Fiber Type | Fiber Distance |
Connector Types | Tx Lambda (nm) |
Rx Lambda (nm) |
Min. Tx Power (dBm) |
Max. Tx Power (dBm) |
Min. Rx Sensitivity (dBm) |
Max. Rx Power (dBm) |
Min Atten- uation |
Link Budget (dB) |
|||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| P1 | P2 | P3 | ST | SC | SFP | RJ-45 | ||||||||||
| FF | UTP | - | MM/DF | 220/550m | 8920P-0 | 8922P-0 | - | - | 850 | 850 | -10 | -4 | -17 | -3 | - | 7 |
| FF | UTP | - | SM/DF | 12km | 8921P-1 | 8923P-1 | - | - | 1310 | 1310 | -9.5 | -3 | -19.5 | -3 | - | 10 |
| FF | UTP | - | SM/DF | 34km | - | 8923P-2 | - | - | 1310 | 1310 | -5 | 0 | -23 | -3 | 3 | 18 |
| FF | UTP | - | SM/DF | 80km | - | 8923P-3 | - | - | 1550 | 1550 | -5 | 0 | -23 | -3 | 3 | 18 |
| FF | UTP | - | SM/DF | 110km | - | 8923P-4 | - | - | 1550 | 1550 | 0 | 5 | -24 | -3 | 8 | 24 |
| FF | UTP | - | SM/DF | 140km | - | 8923P-5 | - | - | 1550 | 1550 | 2 | 5 | -28 | -8 | 13 | 30 |
| FF | UTP | - | SM/SF | 20km* | - | 8930P-1 | - | - | 1310 | 1550 | -9.5 | -3 | -20 | -3 | - | 10.5 |
| FF | UTP | - | SM/SF | 20km* | - | 8931P-1 | - | - | 1550 | 1310 | -9.5 | -3 | -20 | -3 | - | 10.5 |
| FF | UTP | - | SM/SF | 40km* | - | 8930P-2 | - | - | 1310 | 1550 | -3 | 0 | -20 | -3 | 3 | 17 |
| FF | UTP | - | SM/SF | 40km* | - | 8931P-2 | - | - | 1550 | 1310 | -3 | 0 | -20 | -3 | 3 | 17 |
| SFP | UTP | - | - | - | - | - | 8939P-0 | - | See SFP Data Sheet for available transceivers and optical parameters | |||||||
| UTP | UTP | SFP | - | - | - | - | 8970P-0 | See SFP Data Sheet for available transceivers and optical parameters | ||||||||
| UTP | UTP | UTP | - | - | - | - | - | 8974P-0 | ||||||||
| SFP | SFP | UTP | - | - | - | - | 8975P-0 | - | See SFP Data Sheet for available transceivers and optical parameters | |||||||
| SFP | SFP | SFP | - | - | - | - | 8979P-0 | - | See SFP Data Sheet for available transceivers and optical parameters | |||||||
| UTP | UTP | - | - | - | - | - | - | 8989P-0 | ||||||||
| SFP | SFP | - | - | - | - | - | 8999P-0 | - | See SFP Data Sheet for available transceivers and optical parameters | |||||||
FF - Fixed Fiber, UTP - Unshielded Twisted Pair, SFP - Small Form Pluggable Transceiver
*When using single-fiber (SF) media converter models, the Tx wavelength on one end has to match the Rx wavelength on the other.






